feat(webdav): initial implementation for a WebDAV simple auth provider

packages/@uppy/companion/package.json

@@ -65,6 +65,7 @@
     "supports-color": "8.x",
     "tus-js-client": "^4.1.0",
     "validator": "^13.0.0",
+    "webdav": "5.7.1",
     "ws": "8.17.1"
   },
   "devDependencies": {

packages/@uppy/companion/src/server/controllers/get.js

@@ -8,7 +8,7 @@ async function get (req, res) {
   const { provider } = req.companion
 
   async function getSize () {
-    return provider.size({ id, token: accessToken, query: req.query })
+    return provider.size({ id, token: accessToken, providerUserSession, query: req.query })
   }
 
   const download = () => provider.download({ id, token: accessToken, providerUserSession, query: req.query })

packages/@uppy/companion/src/server/provider/index.js

@@ -9,6 +9,7 @@ const instagram = require('./instagram/graph')
 const facebook = require('./facebook')
 const onedrive = require('./onedrive')
 const unsplash = require('./unsplash')
+const webdav = require('./webdav')
 const zoom = require('./zoom')
 const { getURLBuilder } = require('../helpers/utils')
 const logger = require('../logger')
@@ -68,7 +69,7 @@ module.exports.getProviderMiddleware = (providers, grantConfig) => {
  * @returns {Record<string, typeof Provider>}
  */
 module.exports.getDefaultProviders = () => {
-  const providers = { dropbox, box, drive: Drive, googlephotos, facebook, onedrive, zoom, instagram, unsplash }
+  const providers = { dropbox, box, drive: Drive, googlephotos, facebook, onedrive, zoom, instagram, unsplash, webdav }
 
   return providers
 }

packages/@uppy/companion/src/server/provider/webdav/index.js

@@ -0,0 +1,182 @@
+
+const Provider = require('../Provider')
+const { getProtectedHttpAgent, validateURL } = require('../../helpers/request')
+const { ProviderApiError, ProviderAuthError } = require('../error')
+const { ProviderUserError } = require('../error')
+const logger = require('../../logger')
+
+const defaultDirectory = '/'
+
+/**
+ * Adapter for WebDAV servers that support simple auth (non-OAuth).
+ */
+class WebdavProvider extends Provider {
+  static get hasSimpleAuth () {
+    return true
+  }
+
+  // eslint-disable-next-line class-methods-use-this
+  isAuthenticated ({ providerUserSession }) {
+    return providerUserSession.webdavUrl != null
+  }
+
+  async getClient ({ providerUserSession }) {
+    const webdavUrl = providerUserSession?.webdavUrl
+    const { allowLocalUrls } = this
+    if (!validateURL(webdavUrl, allowLocalUrls)) {
+      throw new Error('invalid public link url')
+    }
+
+    // dynamic import because Companion currently uses CommonJS and webdav is shipped as ESM
+    // todo implement as regular require as soon as Node 20.17 or 22 is required
+    // or as regular import when Companion is ported to ESM
+    const { AuthType } = await import('webdav') // eslint-disable-line import/no-unresolved
+
+    // Is this an ownCloud or Nextcloud public link URL? e.g. https://example.com/s/kFy9Lek5sm928xP
+    // they have specific urls that we can identify
+    // todo not sure if this is the right way to support nextcloud and other webdavs
+    if (/\/s\/([^/]+)/.test(webdavUrl)) {
+      const [baseURL, publicLinkToken] = webdavUrl.split('/s/')
+
+      return this.getClientHelper({
+        url: `${baseURL.replace('/index.php', '')}/public.php/webdav/`,
+        authType: AuthType.Password,
+        username: publicLinkToken,
+        password: 'null',
+      })
+    }
+
+    // normal public WebDAV urls
+    return this.getClientHelper({
+      url: webdavUrl,
+      authType: AuthType.None,
+    })
+  }
+
+  async logout () { // eslint-disable-line class-methods-use-this
+    return { revoked: true }
+  }
+
+  async simpleAuth ({ requestBody }) {
+    try {
+      const providerUserSession = { webdavUrl: requestBody.form.webdavUrl }
+
+      const client = await this.getClient({ providerUserSession })
+      // call the list operation as a way to validate the url
+      await client.getDirectoryContents(defaultDirectory)
+
+      return providerUserSession
+    } catch (err) {
+      logger.error(err, 'provider.webdav.error')
+      if (['ECONNREFUSED', 'ENOTFOUND'].includes(err.code)) {
+        throw new ProviderUserError({ message: 'Cannot connect to server' })
+      }
+      // todo report back to the user what actually went wrong
+      throw err
+    }
+  }
+
+  async getClientHelper ({ url, ...options }) {
+    const { allowLocalUrls } = this
+    if (!validateURL(url, allowLocalUrls)) {
+      throw new Error('invalid webdav url')
+    }
+    const { protocol } = new URL(url)
+    const HttpAgentClass = getProtectedHttpAgent({ protocol, allowLocalIPs: !allowLocalUrls })
+
+    // dynamic import because Companion currently uses CommonJS and webdav is shipped as ESM
+    // todo implement as regular require as soon as Node 20.17 or 22 is required
+    // or as regular import when Companion is ported to ESM
+    const { createClient } = await import('webdav')
+    return createClient(url, {
+      ...options,
+      [`${protocol}Agent`] : new HttpAgentClass(),
+    })
+  }
+
+  async list ({ directory, providerUserSession }) {
+    return this.withErrorHandling('provider.webdav.list.error', async () => {
+      // @ts-ignore
+      if (!this.isAuthenticated({ providerUserSession })) {
+        throw new ProviderAuthError()
+      }
+
+      const data = { items: [] }
+      const client = await this.getClient({ providerUserSession })
+
+      /** @type {any} */
+      const dir = await client.getDirectoryContents(directory || '/')
+
+      dir.forEach(item => {
+        const isFolder = item.type === 'directory'
+        const requestPath = encodeURIComponent(`${directory || ''}/${item.basename}`)
+
+        let modifiedDate
+        try {
+         modifiedDate = new Date(item.lastmod).toISOString()
+        } catch (e) {
+          // ignore invalid date from server
+        }
+
+        data.items.push({
+          isFolder,
+          id: requestPath,
+          name: item.basename,
+          modifiedDate,
+          requestPath,
+          ...(!isFolder && {
+            mimeType: item.mime,
+            size: item.size,
+            thumbnail: null,
+
+          }),
+        })
+      })
+
+      return data
+    })
+  }
+
+  async download ({ id, providerUserSession }) {
+    return this.withErrorHandling('provider.webdav.download.error', async () => {
+      const client = await this.getClient({ providerUserSession })
+      const stream = client.createReadStream(`/${id}`)
+      return { stream }
+    })
+  }
+
+  // eslint-disable-next-line
+  async thumbnail ({ id, providerUserSession }) {
+    // not implementing this because a public thumbnail from webdav will be used instead
+    logger.error('call to thumbnail is not implemented', 'provider.webdav.thumbnail.error')
+    throw new Error('call to thumbnail is not implemented')
+  }
+
+  // eslint-disable-next-line
+  async size ({ id, token, providerUserSession }) {
+    return this.withErrorHandling('provider.webdav.size.error', async () => {
+      const client = await this.getClient({ providerUserSession })
+
+      /** @type {any} */
+      const stat = await client.stat(id)
+      return stat.size
+    })
+  }
+
+  // eslint-disable-next-line class-methods-use-this
+  async withErrorHandling (tag, fn) {
+    try {
+      return await fn()
+    } catch (err) {
+      let err2 = err
+      if (err.status === 401) err2 = new ProviderAuthError()
+      if (err.response) {
+        err2 = new ProviderApiError('WebDAV API error', err.status) // todo improve (read err?.response?.body readable stream and parse response)
+      }
+      logger.error(err2, tag)
+      throw err2
+    }
+  }
+}
+
+module.exports = WebdavProvider

packages/@uppy/webdav/package.json

@@ -0,0 +1,35 @@
+{
+  "name": "@uppy/webdav",
+  "description": "Import files from WebDAV into Uppy.",
+  "version": "0.1.0",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "types": "types/index.d.ts",
+  "type": "module",
+  "keywords": [
+    "file uploader",
+    "uppy",
+    "uppy-plugin",
+    "webdav",
+    "provider",
+    "photos",
+    "videos"
+  ],
+  "homepage": "https://uppy.io",
+  "bugs": {
+    "url": "https://github.com/transloadit/uppy/issues"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/transloadit/uppy.git"
+  },
+  "dependencies": {
+    "@uppy/companion-client": "workspace:^",
+    "@uppy/provider-views": "workspace:^",
+    "@uppy/utils": "workspace:^",
+    "preact": "^10.5.13"
+  },
+  "peerDependencies": {
+    "@uppy/core": "workspace:^"
+  }
+}

packages/@uppy/webdav/src/Webdav.tsx

@@ -0,0 +1,116 @@
+import { h } from 'preact'
+import { useState, useCallback } from 'preact/hooks'
+
+import { UIPlugin } from '@uppy/core'
+import { Provider, tokenStorage } from '@uppy/companion-client'
+import { ProviderViews } from '@uppy/provider-views'
+
+import packageJson from '../package.json'
+import locale from './locale.ts'
+
+class WebdavSimpleAuthProvider extends Provider {
+  async login({ authFormData, uppyVersions, signal }) {
+    return this.loginSimpleAuth({ uppyVersions, authFormData, signal })
+  }
+
+  async logout() {
+    this.removeAuthToken()
+    return { ok: true, revoked: true }
+  }
+}
+
+const AuthForm = ({ loading, i18n, onAuth }) => {
+  const [webdavUrl, setWebdavUrl] = useState('')
+
+  const onSubmit = useCallback(
+    (e) => {
+      e.preventDefault()
+      onAuth({ webdavUrl: webdavUrl.trim() })
+    },
+    [onAuth, webdavUrl],
+  )
+
+  return (
+    <form onSubmit={onSubmit}>
+      <label htmlFor="uppy-Provider-publicLinkURL">
+        <span style={{ display: 'block' }}>{i18n('publicLinkURLLabel')}</span>
+        <input
+          id="uppy-Provider-publicLinkURL"
+          name="webdavUrl"
+          type="text"
+          value={webdavUrl}
+          onChange={(e) => setWebdavUrl(e.target.value)}
+          disabled={loading}
+        />
+      </label>
+      <span style={{ display: 'block' }}>
+        {i18n('publicLinkURLDescription')}
+      </span>
+
+      <button style={{ display: 'block' }} disabled={loading} type="submit">
+        Submit
+      </button>
+    </form>
+  )
+}
+
+export default class Webdav extends UIPlugin {
+  static VERSION = packageJson.version
+
+  constructor(uppy, opts) {
+    super(uppy, opts)
+    this.id = this.opts.id || 'webdav'
+    this.type = 'acquirer'
+    this.storage = this.opts.storage || tokenStorage
+
+    this.defaultLocale = locale
+
+    this.i18nInit()
+
+    this.title = this.i18n('pluginNameWebdav')
+
+    this.provider = new WebdavSimpleAuthProvider(uppy, {
+      companionUrl: this.opts.companionUrl,
+      companionHeaders: this.opts.companionHeaders,
+      companionKeysParams: this.opts.companionKeysParams,
+      companionCookiesRule: this.opts.companionCookiesRule,
+      provider: 'webdav',
+      pluginId: this.id,
+      supportsRefreshToken: false,
+    })
+
+    this.onFirstRender = this.onFirstRender.bind(this)
+    this.render = this.render.bind(this)
+  }
+
+  install() {
+    this.view = new ProviderViews(this, {
+      provider: this.provider,
+      viewType: 'list',
+      showTitles: true,
+      showFilter: true,
+      showBreadcrumbs: true,
+      renderAuthForm: ({ i18n, loading, onAuth }) => (
+        <AuthForm loading={loading} onAuth={onAuth} i18n={i18n} />
+      ),
+    })
+
+    const { target } = this.opts
+    if (target) {
+      this.mount(target, this)
+    }
+  }
+
+  uninstall() {
+    this.view.tearDown()
+    this.unmount()
+  }
+
+  onFirstRender() {
+    return this.view.getFolder()
+  }
+
+  render(state) {
+    return this.view.render(state)
+  }
+}

packages/@uppy/webdav/src/index.ts

@@ -0,0 +1 @@
+export { default } from './Webdav.tsx'

packages/@uppy/webdav/src/locale.ts

@@ -0,0 +1,8 @@
+export default {
+  strings: {
+    pluginNameWebdav: 'WebDAV',
+    publicLinkURLLabel: 'URL',
+    publicLinkURLDescription:
+      'WebDAV url or an ownCloud or Nextcloud public link',
+  },
+}

packages/uppy/package.json

@@ -67,6 +67,7 @@
     "@uppy/unsplash": "workspace:^",
     "@uppy/url": "workspace:^",
     "@uppy/webcam": "workspace:^",
+    "@uppy/webdav": "workspace:^",
     "@uppy/xhr-upload": "workspace:^",
     "@uppy/zoom": "workspace:^"
   }